Water-saving improved CIP system
By setting up a conductivity sensor on the U-shaped liquid return tube of the CIP system and using signal conditioning circuits and microcontroller control, the recycling and efficient control of the cleaning liquid is achieved, and the problem of waste water sources and error judgment of cleaning end points in the existing CIP system is solved, which significantly saves the consumption of cleaning liquid and improves the cleaning efficiency.
Patent Information
- Application Number
- CN202421656455.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing CIP system wastes a lot of purified water or injection water during the cleaning process, and the installation position of the conductivity sensor leads to incorrect judgment of the cleaning end point, which may lead to unqualified cleaning.
A water-saving and improved CIP system was designed. By setting up a conductivity sensor on the U-shaped liquid return tube, and signal processing is performed using a signal conditioning circuit, combined with microcontroller control, the conductivity changes of the cleaning liquid are accurately judged, and the recycling and efficient control of the cleaning liquid is achieved.
It significantly saves the consumption of cleaning liquid during the cleaning process, improves the utilization rate of cleaning liquid, ensures accurate judgment of the cleaning end point, avoids the situation of unqualified cleaning, and achieves the effect of water saving and efficient cleaning.
Smart Images
Figure CN222902112U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pharmaceutical cleaning, and in particular relates to a water-saving improved CIP system. Background Art
[0002] In the field of pharmaceutical production technology, cleaning is the core to ensure drug safety and quality control. The automated CIP (Clean In Place) unit system is an essential equipment for large-scale commercial production.
[0003] The current CIP unit system is generally responsible for the CIP of several unit systems to be cleaned, and only one conductivity sensor is set on the CIP unit system as the judgment of the CIP endpoint. Since the CIP pipeline loop is long, the pipeline is thick, and the pipeline is often treated with 0.5mol / L sodium hydroxide lye, and the CIP endpoint conductivity is often as low as 5.1μS / cm (25℃) or 1.3μS / cm (25℃), each pre-treatment will waste a lot of purified water or water for injection.
[0004] At the same time, the conductivity sensors in the current CIP system are often installed on straight-through pipes. When they are not in contact with liquid, the conductivity is displayed as 0. This structural design often causes the system to regard the tested air conductivity as the cleaning endpoint, which may lead to unqualified cleaning. Summary of the invention
[0005] The purpose of the utility model is to provide a water-saving improved CIP system to solve the problems existing in the prior art in view of the defects existing in the prior art.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A water-saving improved CIP system comprises a control unit, a cleaning liquid storage tank, a liquid delivery pump, a back-drawing pump, a liquid delivery pipeline, a liquid return pipeline, a conductivity sensor and a power module for supplying power to the entire CIP system, wherein the cleaning liquid storage tank is connected to a component to be cleaned via a liquid delivery pipeline, a liquid delivery pump is arranged on the liquid delivery pipeline, the component to be cleaned is connected to the cleaning liquid storage tank via a liquid return pipeline, a back-drawing pump is arranged on the liquid return pipeline, a U-shaped liquid return pipe is arranged on the liquid return pipeline located in the component to be cleaned, a conductivity sensor is arranged on the U-shaped liquid return pipe, the conductivity sensor is connected to the input end of the control unit, and the liquid delivery pump and the back-drawing pump are both connected to the output end of the control unit.
[0008] A further improvement of the technical solution is that the control unit includes a single chip microcomputer of model AT89C51.
[0009] A further improvement of the technical solution is that a sewage outlet is provided at the bottom end of the cleaning liquid storage tank, and a waste discharge pipe is connected to the sewage outlet.
[0010] A further improvement of the technical solution is that a signal conditioning circuit is provided between the conductivity sensor and the control unit.
[0011] A further improvement of the technical solution is that the signal conditioning circuit includes a resistor R1, an amplifier U1, a resistor R2, a capacitor C1, a capacitor C2, a resistor R3 and a capacitor C3, a first end of the resistor R1 is connected to the conductivity sensor, a second end of the resistor R1 is connected to the inverting input of the amplifier U1, a non-inverting input of the amplifier U1 is grounded through the resistor R2, a first power supply end of the amplifier U1 is connected to the power supply and is grounded through the capacitor C1, a second power supply end of the amplifier U1 is connected to the power supply and is grounded through the capacitor C2, an output end of the amplifier U1 is connected to the inverting input of the amplifier U1 through a resistor R3 and a capacitor C3 connected in parallel, and an output end of the amplifier U1 is connected to the input end of the control unit.
[0012] A further improvement of the technical solution is that the amplifier U1 adopts a dual operational amplifier of model LM358.
[0013] The beneficial effects of the utility model are:
[0014] Significant water-saving effect: The system greatly reduces the consumption of cleaning fluid during the cleaning process through precise recycling of cleaning fluid. The design of the U-shaped return pipe ensures that the cleaning fluid can fully contact and return to the components to be cleaned, thereby improving the utilization rate of the cleaning fluid and achieving significant water-saving effect. The conductivity sensor that controls the end point is moved forward to the unit system to be cleaned, which greatly reduces the loop and saves a lot of purified water or water for injection.
[0015] Improve cleaning efficiency: The conductivity sensor monitors the conductivity change of the cleaning liquid in the U-shaped return pipe in real time, and the control unit can accurately determine the cleanliness of the cleaning liquid, thereby adjusting the working status of the liquid delivery pump and the return pump in time. This intelligent control makes the cleaning process more efficient and can ensure that the expected cleaning effect is achieved in a shorter time.
[0016] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect.
[0017] It can be seen that compared with the prior art, the present invention has outstanding substantive features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of the water-saving improved CIP system.
[0019] Figure 2 This is the schematic diagram of the signal conditioning circuit.
[0020] 110 is a cleaning liquid storage tank, 120 is a liquid delivery pump, 130 is a back-drawing pump, 140 is a liquid delivery pipeline, 150 is a liquid return pipeline, 160 is a conductivity sensor, 170 is a control unit, and 180 is a waste pipe. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0023] like Figure 1 As shown, the utility model provides a water-saving improved CIP system, including a control unit, a cleaning liquid storage tank, a liquid delivery pump, a back-drawing pump, a liquid delivery pipeline, a liquid return pipeline, a conductivity sensor and a power module for powering the entire CIP system, the cleaning liquid storage tank is connected to the component to be cleaned through a liquid delivery pipeline, a liquid delivery pump is arranged on the liquid delivery pipeline, the component to be cleaned is connected to the cleaning liquid storage tank through a liquid return pipeline, a back-drawing pump is arranged on the liquid return pipeline, a U-shaped liquid return pipe is arranged on the liquid return pipeline located in the component to be cleaned, a conductivity sensor is arranged on the U-shaped liquid return pipe, the conductivity sensor is connected to the input end of the control unit, and the liquid delivery pump and the back-drawing pump are both connected to the output end of the control unit. Among them, the control unit includes a single-chip microcomputer of model AT89C51. The cleaning liquid storage tank can be an alkaline tank, a pure water tank or an acid tank.
[0024] In order to ensure the cleanliness of the CIP system, a sewage outlet is also provided at the bottom end of the cleaning liquid storage tank, and a waste pipe is connected to the sewage outlet.
[0025] In addition, a signal conditioning circuit is provided between the conductivity sensor and the control unit. Figure 2As shown, the signal conditioning circuit includes a resistor R1, an amplifier U1, a resistor R2, a capacitor C1, a capacitor C2, a resistor R3 and a capacitor C3, the first end of the resistor R1 is connected to the conductivity sensor, the second end of the resistor R1 is connected to the inverting input end of the amplifier U1, the non-inverting input end of the amplifier U1 is grounded through the resistor R2, the first power supply end of the amplifier U1 is connected to the power supply and grounded through the capacitor C1, the second power supply end of the amplifier U1 is connected to the power supply and grounded through the capacitor C2, the output end of the amplifier U1 is connected to the inverting input end of the amplifier U1 through the parallel resistor R3 and the capacitor C3, and the output end of the amplifier U1 is connected to the input end of the control unit. Among them, the amplifier U1 adopts a dual operational amplifier of model LM358.
[0026] The above disclosure is only the preferred implementation mode of the utility model, but the utility model is not limited thereto. Any non-creative changes that can be thought of by technicians in this field, as well as several improvements and modifications made without departing from the principle of the utility model, should fall within the scope of protection of the utility model.
Claims
1. A water-saving improved CIP system, characterized in that: It includes a control unit, a cleaning liquid storage tank, a liquid delivery pump, a back-drawing pump, a liquid delivery pipeline, a liquid return pipeline, a conductivity sensor and a power module for supplying power to the entire CIP system. The cleaning liquid storage tank is connected to the component to be cleaned through the liquid delivery pipeline, the liquid delivery pipeline is provided with a liquid delivery pump, the component to be cleaned is connected to the cleaning liquid storage tank through the liquid return pipeline, the liquid return pipeline is provided with a back-drawing pump, the liquid return pipeline located in the component to be cleaned is provided with a U-shaped liquid return pipe, the conductivity sensor is provided on the U-shaped liquid return pipe, the conductivity sensor is connected to the input end of the control unit, and the liquid delivery pump and the back-drawing pump are both connected to the output end of the control unit.
2. The water-saving improved CIP system according to claim 1 is characterized in that: The control unit includes a single chip microcomputer of type AT89C51.
3. The water-saving improved CIP system according to claim 1 is characterized in that: The bottom end of the cleaning liquid storage tank is also provided with a sewage outlet, and the sewage outlet is connected with a waste discharge pipe.
4. The water-saving improved CIP system according to claim 1 is characterized in that: A signal conditioning circuit is arranged between the conductivity sensor and the control unit.
5. The water-saving improved CIP system according to claim 4 is characterized in that: The signal conditioning circuit includes a resistor R1, an amplifier U1, a resistor R2, a capacitor C1, a capacitor C2, a resistor R3 and a capacitor C3, a first end of the resistor R1 is connected to the conductivity sensor, a second end of the resistor R1 is connected to the inverting input end of the amplifier U1, a non-inverting input end of the amplifier U1 is grounded through the resistor R2, a first power supply end of the amplifier U1 is connected to the power supply and is grounded through the capacitor C1, a second power supply end of the amplifier U1 is connected to the power supply and is grounded through the capacitor C2, an output end of the amplifier U1 is connected to the inverting input end of the amplifier U1 through a resistor R3 and a capacitor C3 connected in parallel, and an output end of the amplifier U1 is connected to an input end of a control unit.
6. The water-saving improved CIP system according to claim 5, characterized in that: Amplifier U1 uses a dual operational amplifier of model LM358.